So I was about to leave the house to go to a coffee shop to get my wife some hot chocolate and get myself some coffee. As I'm about to leave, I tell her I'm planning on paying for whoever is behind me in the drivethru, since a couple weeks ago somebody did that for me. So I pull into the drivethru, place my order, and notice nobody is behind me. So I take my time getting up to the window hoping somebody will pull up behind, but nobody did. Anyway, I get to the window and the lady tells me that the people in front of me paid for my stuff! Preemptive karma!!!

Moral of the story: Before you leave the house to go buy something, tell your wife you're going to buy whatever the person behind you in line is getting. That way you end up getting your stuff for free!